Related Questions

According to Kirchoff's law, the ratio of emissive power to absorptivity for all bodies is equal to the emissive power of a
A Grey body
B Brilliant white polished body
C Red hot body
D Black body
Kirchoff's law is applicable to
A Monochromatic radiation only
B Total radiation only
C Both A and B
D Only volumes and not to surfaces
As per Kirchoff s equation, the heat of reaction is affected by the
A Pressure
B Volume
C Temperature
D Molecularity
Stefen's block body radiation law can also be derived from __________ law.
A Kirchoffs
B Planck's
C Fourier's
D None of these
Stefan-Boltzman law applies to __________ body.
A Black
B White
C Grey
D Any colour
Fourier's law of heat conduction applies to __________ surfaces.
A Isothermal
B Non-isothermal
C Both A and B
D Neither A and B
The part radiation due to scattered/diffused radiation entering the field of view of a remote sensor other than that from the required target,
A Reduces the contrast of the image and also its sharpness
B Increases the contrast of the image but reduces the sharpness
C Increases both the contrast and sharpness
D Reduces the contrast but increases the sharpness
A 'body' which allows the short wavelength incoming solar radiation to enter in, but does not allow long wave length outgoing infra red radiation to escape out is called the
A Global warming
B Green house
C Atmospheric effect
D Ionosphere
The incoming short-wave solar radiation is balanced by an equal amount of long-wave radiation from earth going back to space. This is known as ________
A Earth radiation
B Wave balance of earth
C Heat balance of earth
D Radiation exchange
The law applies to _____. (Choose the appropriate word to fill in the gap)
A all and sundry
B all in all
C each other
D one anohter

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